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‘신고’ 배 저장 중 바람들이 발생에 따른 세포벽 특성
심훈기(Hoon-Ki Shim),서정학(Jeong-Hak Seo),문승주(Seung-Joo Moon),한창훈(Chang-Hoon Han),마쓰모토가즈히로(Kazuhiro Matsumoto),황용수(Yong-Soo Hwang),천종필(Jong-Pil Chun) 한국원예학회 2007 원예과학기술지 Vol.25 No.3
배 ‘신고’에서 저장 중 생리장해로 큰 피해를 주고 있는 바람들이의 발생에 따른 과실의 품질 및 세포벽성분의 생리 생화학적 특성을 검토하여 과실 생리 및 저장기술의 기초 자료로 제공하고자 본 실험을 실시하였다. 저온저장 기간의 경과와 더불어 바람들이 장해는 증가하는 경향이었고 이러한 경향은 미숙과에 비해 성숙과실에서 뚜렷하였다. 바람들이가 발생한 과실은 과실의 크기에 벼하여 무게가 상대적으로 낮게 측정되었으며 바람들이 장해가 발생한 조직은 경도, 산 함량, 총지질 함량이 정상조직보다 낮았으며 조직의 붕괴도 관찰되었다. 장해가 발생한 과실 조직의 수용성 펙틴, CDTA-가 용성 펙틴 및 Na₂CO₃-가용성 펙틴의 기용성이 정상과실의 조직에 비하여 크게 증가하였고 헤미셀룰로스의 가용성도 장해의 진전과 더불어 증가하였는데 특히 4% KOH 가용성분획의 증가가 유의하였다. 그러나 세포벽 분획 성분별 분자량 변화는 정상과의 조직과 장해과의 장해조직에서만 다소 확인되며 장해 발생정도에 따른 변화는 관찰되지 않았다. We examined physiological and chemical characteristics of pithiness disorder occurred in stored ‘Niitaka’ pears (Pyrus pyrifolia Nakai). Pithiness disorders were increased as low temperature storage time passes and those were prominent in the fruits of full ripe which increased disorder up to 80% for 4 months of storage. Anatomical changes observed by stereomicroscope in damaged tissues showed an extent of cell collapse and cavity formation. The weights of disordered fruits were lower than those of unaffected ones when compared with fruit size. Analysis of pithiness tissues showed almost 40% of firmness drop when we compared to sound tissue. The amount of water-, trans-l,2-cyclohexanediamine-N,N,N',N'-tetra-acetic acid (CDTA)-, and sodium carbonate-soluble pectic polysaccharides and 4% KOH soluble hemicellulosic fraction increased as pithiness disorder extended. But the depolymerizations of high molecular-mass cell wall pectic-and hemicellulosic polysaccharides were not prominent in the disordered tissues while a slight difference was found between unaffected and disordered fruits. Results indicated that the depolymerization of cell wall components were not the major cause of pithiness disorder during low temperature storage in ‘Niitaka’ pears.
화총내 착과위치에 따른 ‘신고’ 배 (Pyrus pyrifolia Nakai) 과실의 품질비교
이욱용(Ug-Yong Lee),오경영(Kyoung-Young Oh),심훈기(Hoon-Ki Shim),이혁재(Hyuk-Jae Lee),황용수(Yong-Soo Hwang),천종필(Jong-Pil Chun) 충남대학교 농업과학연구소 2010 농업과학연구 Vol.37 No.1
In order to prepare the technical fundamental in production of premium quality fruits of ‘Niitaka’ pears, we compared the quality parameters and storability of the fruits that had various fruit set position in a cluster. The fruits set on 4<SUP>th</SUP> from basal part in fruit cluster had the largest fruit size. The weight of fruits set on the higher position than 4<SUP>th</SUP> from basal part in fruit cluster showed decreasing tendency. The production rates of marketable fruits which had 500g to 899g in weight were the high in 3-5<SUP>th</SUP> from basal part in cluster than those in other position. The differences of fruit height and diameter which represent balanced fruit shape also showed less difference in the fruits set on 4-5<SUP>th</SUP> from basal part in cluster than the fruits set closely on basal part in cluster. The fruits set on 3-4<SUP>th</SUP> from basal part in cluster showed lower rate in incidence of core breakdown and pithiness disorder during 4 months of cold storage than those on the closer position to basal part in cluster.